The DeltaSol® BS Plus controller is pre-programmed for different hydraulic basic systems and equipped with pump speed control and heat quantity measurement.The controller additionally has a time controlled thermostat function and is equipped with the RESOL VBus® for data communication.

The VBus® permits two way communication between modules, PCs or dataloggers. The controller can easily be configurated by PC using the RESOL ServiceCenter Software. Temperatures in certain time slots can be adjusted independently using the integrated thermostat function and real time clock.

The DeltaSol® AL solar controller is a temperature differential controller that offers all the vital functions for a standard solar thermal system. The controller is equipped with the comprehensive System-Monitoring-Display, which shows the system parameters quickly and easily.

For data communication, the controller has RESOL VBus® to which additional modules such as remote displays or dataloggers can be connected. The DeltaSol® AL offers energy metering, a solar operating hours counter and can be switched between °C and °F. Operation and functionality control are straightforward.

A multitude of adjustable functions and options are possible using 7 relay outputs and 10 sensor inputs for Pt1000, CS10 and V40. Due to its intelligent and easy-to-understand system configuration and its integrated calorimeter, the controller also offers the control of complex systems with up to 4 weather-compensated heating circuits.

For data communication and remote maintenance, the controller is equipped with the RESOL VBus®, which permits two-way communication between modules, PCs or dataloggers.

The RESOL DeltaSol® Pool is a controller for heating a swimming pool by means of solar collectors and optimised operation of the filter system. Back up heating of the swimming pool is varied according to solar power and pool demand, thus saving expensive energy. Furthermore, the controller is equipped with a function control which shows whether the system runs faultlessly or if there is an error.

The controller has many additional pool functions such as: additional filter runtime, maximum limitation of flow temperature and a flushing function.

The DeltaSol® Pool can easily be connected to other modules via the RESOL VBus®.

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Our Vendors

Alpha Thermal Systems is the exclusive United States distributor of RESOL Solar Controllers and Hydronic Controllers.

Alpha Thermal Systems is a major North American distributor of PAW Solar Thermal Pump Stations.

Why Buy From Us

Because we are the exclusive United States distributor of RESOL Solar Controllers and Hydronic Controllers and a major North American distributor of PAW Solar Thermal Pump Stations we can offer these products at a deeply discounted price to registered customers. When you combine the quality of our products with our discounted prices you simply cannot affored not to do business with us.